Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Details)

v3.7.0.1
FAIR VALUE MEASUREMENTS (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
U.S. Government Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure $ 276,965 $ 286,278
U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 142,894 131,640
States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 99,978 94,839
Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 1,362 1,430
Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 8,487 8,547
Level 1 Inputs [Member] | U.S. Government Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure 276,965 286,278
Level 1 Inputs [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Level 1 Inputs [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Level 1 Inputs [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Level 1 Inputs [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 2 [Member] | U.S. Government Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 2 [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 142,894 131,640
Fair Value, Inputs, Level 2 [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 99,978 94,839
Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 1,362 1,430
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 8,487 8,547
Fair Value, Inputs, Level 3 [Member] | U.S. Government Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure $ 0 $ 0